@help.main("") {

    <style>

        .left-active{
            color: red !important;
        }

    </style>
    <div class="book-body" style="overflow-x: hidden">
        <div style="width: 850px">

            <iframe  id="frame"  style="width: 840px;margin:auto;bottom: 0;height: 825px;" src="@routes.Assets.at("tools/basic/cp_file.html")" frameborder="0" align="middle">

            </iframe>

        </div>

    </div>


    <script>




        function openHelp(file,id) {

            $("a").removeClass("left-active");
            $("#"+id).addClass("left-active");
            $("#frame").attr("src","/assets/tools/"+file);

        }

    </script>


}
